AnnAGNPS模型动态及其应用进展  

The Theory, Structure and Advance of AnnAGNPS Model

作　　者：花利忠[1,2] 袁建平[3] 韦杰[1,2] 郑进军[1,2] 贺秀斌[1] 朱波[1] 

机构地区：[1]中国科学院水利部成都山地灾害与环境研究所,四川成都610041 [2]中国科学院研究生院,北京100049 [3]水利部综合事业局,北京100053

出　　处：《山地学报》2006年第B10期330-337,共8页Mountain Research

基　　金：国家973基金资助项目（2003CB415201）.

摘　　要：AnnAGNPS（Annualized Agricultural Non—point Pollutant Loading Model）是一个基于连续事件的分布式流域模型，与地理信息系统软件ArcView3．2a紧密集成，快速提取地面数据，不仅可以模拟非点源污染过程，还可以模拟多尺度流域的水、沙、输移与转化等水文过程。在介绍了该模型的原理、结构、功能及其研究进展后，探讨了模型存在的主要问题和应用前景。Concerns over non-point source pollution （NPS） has been widely raised in many countries. Due to the NPS complexity and expensive nature of laboratory and field observations, NPS management necessitate the development and use of the water quality models such as AnnAGNPS （Annualized Agricultural Non-point Pollutant Loading model）. AnnAGNPS is a continuous simulation, daily time step and watershed-scale model developed based on the single-event model AGNPS. It is the result of a joint effort of USDA Natural Resources Conservation Service and Agricultural Research Service to develop a system of models to predict non-point source pollutant loading within agricultural watersheds. The model includes significantly advanced features such as pesticides, source accounting, setfling of sediments due to in-stream impoundments, and the Revised Universal Soil Loss Equation in addition to many of the important features in the original AGNPS. The model divides the watershed into homogenous the cells （ land areas） with respect to soil type, land use, and land management. , which are then integrated together by simulated rivers and streams, routing the runoff and pollutants from each area downstream. AnnAGNPS simulates surface water, sediment, nutrients and pesticides leaving the cells and their transport through the watershed. The hydrology of the model is based on simple water balance approach. Runoff quantities are based on runoff curve numbers while sediment is determined by using the Revised Universal Soil Loss Equation （RUSLE）. Special components are included to handle concentrated sources of nutrients （feedlots and point sources）, concentrated sediment sources （ gullies）, and added water （irrigation）. AnnAGNPS with the integration of GIS ArcView 3.2 a facilitates development of input data files and for analysis of output data. Output is expressed on an event basis for selected stream reaches and as source accounting （ contribution to outlet） from land or reach components over the simulation pe

关 键 词：ANNAGNPS 模型 非点源污染 水土流失 

分 类 号：S157.1[农业科学—土壤学] X53[农业科学—农业基础科学]